Emission from coal combustion is one of the main approaches of Pb appearing in the atmosphere.Studying the Pb emission characteristics in coal-fired plants can provide fundamental basis for heavy metal pollution control technology.This paper estimated the emission of Pb from coal combustion to the atmosphere in recent years

summarized the researches on reaction mechanisms of Pb during coal combustion

and analyzed the distribution and enrichment characteristics of Pb.Moreover

the effect of dedust and desulfurization devices on Pb emission were investigated.It shows that

for the same boiler

the coal property and combustion condition are the factors most affecting the Pb emission

while for boilers with different capacities

the reaction mechanisms of heavy metal during combustion and condensation mainly affects the Pb emission.